12999186 has 48 divisors (see below), whose sum is σ = 31135104. Its totient is φ = 3898752.

The previous prime is 12999179. The next prime is 12999187. The reversal of 12999186 is 68199921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12999187) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6115 + ... + 7961.

It is an arithmetic number, because the mean of its divisors is an integer number (648648).

Almost surely, 2^12999186 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12999186, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15567552).

12999186 is an abundant number, since it is smaller than the sum of its proper divisors (18135918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12999186 is a wasteful number, since it uses less digits than its factorization.

12999186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1895 (or 1892 counting only the distinct ones).

The product of its digits is 69984, while the sum is 45.

The square root of 12999186 is about 3605.4383922070. The cubic root of 12999186 is about 235.1285610121.

The spelling of 12999186 in words is "twelve million, nine hundred ninety-nine thousand, one hundred eighty-six".